Patents by Inventor Theodoor J. Tromp

Theodoor J. Tromp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Heat exchanger with multiwall tubes
    Patent number: 4723602
    Abstract: A heat exchanger having a housing with one or more tubes therein for the transportation of a first fluid through the tubes and a second fluid through the housing and at least partially around the tube or tubes, in which each tube includes two concentric walls with a thin layer or thin layers of a relatively soft material between them applied to the outer surface of the inner wall and to the inner surface of the outer wall.
    Type: Grant
    Filed: June 26, 1980
    Date of Patent: February 9, 1988
    Assignee: B.V. Neratoom
    Inventors: Johannes H. Huigen, Theodoor J. Tromp, Jan Vrijen, Johan K. van Westenbrugge